Early pregnancy help?!?

Katie
Okay ladies, please help me out. 
I was ovulating when I had sex on December 23rd. I'm supposed to get my period on Sunday. I have no symptoms. However I have been craving chilis chips and salsa like CRAZY. This past week I've ordered it, picked it up and came home. Just the chips and salsa. I have NEVER had cravings before and it won't be satisfied. Do y'all think this is an early sign? Would it be to early for cravings? Thanks ladies!